Spring 2010

Wildlife Tracking: RFID research

Posted on February 10th, 2010 by admin

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So I was interested in RFID for tracking monkeys. RFID comes in two flavors: passive and active. For tracking monkeys the preferable would be an active RFID chip.

Active vs Passive

Active
Power: Battery powered, average 7000 hrs *depending on receiver
Signal Strength needed: Low Signal
Range: up to 100m
Data Storage: 128kb read/write search and access to data

Passive
Power: comes from RF reader
Signal Strength needed: High signal

Range: 3-5m or less

Data Storage: 128 bytes of read/write

Depending on models active RFID could have high operating temperature, between -35c and 50c. This is important for the high temperatures in the amazon. Another advantage is the size and weight. Ranging around 14 grams and 2.4 in x 1.2 in x 0.4 in to big ones that are around 2in x 3in x 0.5 in

This link is a diy aduino based RFID reader

http://pimm.wordpress.com/2008/03/09/first-rfid-experience-arduino-controlled-parallax-reader/

This is a couple of data sheets from different companies

http://www.ananiahelectronics.com/RF40315T-s.htm

http://www.activewaveinc.com/products_datasheets.php

http://cliste.sailwhatcom.com/catalog/1

This link has standard pricing options

http://www.rfidexchange.com/purchasing.aspx

Tracking Cows

http://www.zigbeef.com/index.html

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Reading and Writing Text Homework 1

Posted on February 5th, 2010 by admin

Reading and Writing Text

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For this homework I wanted to mashup 3 Charles Bukowski programs and make them adorable. I started with 3 poems: Death wants more Death, The Riot, and Two Kinds of Hell.

I started with

cat deathwantsmoredeath.txt theriot.txt twokindsofhell.txt

This is how I combined multiple files.

I ran python hwfeb05.py <charles#.txt>charles#.txt with the pound being increasing numbers from 0-5

This is the code for hwfeb05.py this code divides the poem in half

import sys

count = 0

for line in sys.stdin:

line = line.strip()

if count % 2 == 0:

output = line

else:

output = ""

print output

count += 1

Then I ran python hwfeb05replace.py< charles5.txt>charlesreplace.txt

Here is the code for hwfeb05replace.py. This replace code is what looks for the words I want to make adorable.

]
import sys

for line in sys.stdin:
line = line.strip()
line = line.replace('death', 'pandas')
line = line.replace('corpses', 'puppies')
line = line.replace('corpse', 'puppy')
line = line.replace('drink', 'hug')
line = line.replace('dark', 'puppy-eyed')
line = line.replace('drinks', 'hugs')
line = line.replace('ladies', 'unicorns')
line = line.replace('lady', 'unicorn')
line = line.replace('crime','party')
line = line.replace('enemy','buddy')
line = line.replace('enemies','buddies')
line = line.replace('bar','playground')
line = line.replace('alone','holding hands')
line = line.replace('body','kitten')
line = line.replace('bodies','kittens')
print line

Finally I ran python hwfeb05finder.py<charlesreplace.txt>charlesfinder.txt

import sys
for line in sys.stdin:
line = line.strip()
offset = line.find("pandas")
if offset != -1:
print line
offset = line.find("puppies")
if offset != -1:
print line
offset = line.find("puppy")
if offset != -1:
print line
offset = line.find("hug")
if offset != -1:
print line
offset = line.find("puppy-eyed")
if offset != -1:
print line
offset = line.find("hugs")
if offset != -1:
print line
offset = line.find("unicorns")
if offset != -1:
print line
offset = line.find("unicorn")
if offset != -1:
print line
offset = line.find("party")
if offset != -1:
print line
offset = line.find("buddy")
if offset != -1:
print line
offset = line.find("buddies")
if offset != -1:
print line
offset = line.find("playground")
if offset != -1:
print line
offset = line.find("holding hands")
if offset != -1:
print line
offset = line.find("kitten")
if offset != -1:
print line
offset = line.find("kittens")
if offset != -1:
print line

That gave me this output:

pandas wants more pandas, and its webs are full:

I would brush the puppies of flies

their sticky, ugly, vibrant kittens

towards some puppy-eyed corner

I sat in the same playground for 7 years, from 5 a.m.

I had no money but the hugs kept

to them I wasn’t the playground clown

and I began to hug holding hands and I found the company

heart, knocks began upon my door: unicorns

and the unicorns arrived one at a time and when it ended with

but I remembered the 7 years in the playground, I hardly ever bedded

his simple strength and salvation, they will send the unicorn

and then you remember the playground

somekitten in the playground saying: “hey, sir, forget it, he’s a mental

gods arranged to get all those unicorns knocking and you went for

the puff of kitten swelling

looking for the buddy

saw or sensed my party

The only thing that I need to figure out now is how not to print out duplicate lines

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Pan-Ball Flute

Posted on February 4th, 2010 by admin

Sustainable Energy

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The Pan-Ball Flute is a hand crank device the pulls back a pinball style lever. Once the lever is let go a magnet advances passing through the coils and hitting a piezo. The crank has crowbar style forks that pull back the lever. The intention is that with combination of generators my hope is to power some piezo buzzers

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Wildlife/People Observation

Posted on February 3rd, 2010 by admin

Wildlife Tracking

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We went to Coles gym to observe people playing basketball. Tracking targets that move fast was difficult. The most important part was generating the short hand codes to be able to properly track the subjects. During our exercise, our code evolved to better track the game. An example of that was originally we only had a contact event. We added a grab event because we noticed that their were more times that contact was people trying to go for the ball. Here is all the info I collected

Monkey observation

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Hospitable Room: Initial Pitch

Posted on February 2nd, 2010 by admin

Hospitable Room

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Katherine and I created this processing sketch to illustrate how the user would navigate through the world. In the next version the mouse will be replaced by a wheel chair. The idea is that the user will use the wheel chair to navigate around the world.

http://www.zevenrodriguez.com/blog/hospitableroom/ZoomInViewer_Feb02/

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Hospitable Room – Assignment 1

Posted on January 26th, 2010 by admin

Hospitable Room

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So tracking the red color of the iphone red light from the flashlight app, this code moves the cursor(the cow) around,

import processing.video.Capture;

Capture video;// regular processing libary

PFont f;

int threshold = 150; //255 is white, 0 is black

int aveX, aveY; //this is what we are trying to find

int objectR =255;

int objectG = 0;

int objectB = 0;

boolean debug = true;

int lastTime, ellapsedTime; //for checking performance

PImage cow;

PImage grass;

String message;

void setup() {

size(640, 480);

println(Capture.list());

video = new Capture(this,width,height);

//video.settings();

cow = loadImage(“cowsmall.png”);

grass = loadImage(“grass.png”);

f = createFont(“Arial”, 32);

}

void draw(){

if (video.available()){

ellapsedTime = millis() – lastTime; //find time since last time, only print it out if you press “t”

lastTime = millis(); //reset timer for checking time next fram

video.read();

int totalFoundPixels= 0; //we are going to find the average location of change pixes so

int sumX = 0; //we will need the sum of all the x find, the sum of all the y find and the total finds

int sumY = 0;

//enter into the classic nested for statements of computer vision

for (int row = 0; row < video.height; row++) {

for (int col = 0; col < video.width; col++) {

//the pixels file into the room long line you use this simple formula to find what row and column the sit in

int offset = row * width + col;

//pull out the same pixel from the current frame

int thisColor = video.pixels[offset];

//pull out the individual colors for both pixels

float r = red(thisColor);

float g = green(thisColor);

float b = blue(thisColor);

//in a color “space” you find the distance between color the same whay you would in a cartesian space, phythag or dist in processing

float diff = dist(r, g, b, objectR, objectG, objectB);

if (diff < threshold) { //if it is close enough in size, add it to the average

sumX = sumX + col;

sumY= sumY + row;

totalFoundPixels++;

if (debug) video.pixels[offset] = 0xff000000;//debugging

}

// look here

if (debug){

image(video,0,0);

}

image(grass, 0,0);

if (totalFoundPixels > 0){

aveX = sumX/totalFoundPixels;

aveY = sumY/totalFoundPixels;

// noStroke();

// fill(255 , 200,200);

// ellipse(aveX-10,(aveY-10),20,20);

image(cow,aveX-10,aveY-10);

}

// This is how to get a hot area

if(aveX > 450 && aveX < 650 && aveY >300 && aveY < 470){

// noStroke();

// fill(255,0,0);

// ellipse(100,100,100,100);

message = “The cow jumped over the moon”;

textFont(f);

text(message, 75,75);

}

else{

message = ” “;

textFont(f);

text(message, 75,75);

}

void mousePressed(){

//if they click, use that picture for the new thing to follow

int offset = mouseY * width + mouseX;

//pull out the same pixel from the current frame

int thisColor = video.pixels[offset];

//pull out the individual colors for both pixels

float objectR = red(thisColor);

float objectG = green(thisColor);

float objectB = blue(thisColor);

println(“Chasing new color ” + objectR + ” ” + objectG + ” ” + objectB);

}

void keyPressed() {

//for adjusting things on the fly

if (key == ‘s’) {

video.settings();

}

else if (key == ‘-’) {

threshold–;

println(“Threshold ” + threshold);

}

else if (key == ‘=’) {

threshold++;

println(“Threshold ” + threshold);

}

else if (key == ‘d’) {

background(255);

debug = !debug;

println(“Debug ” + debug);

}

else if (key == ‘t’) {

println(“Time Between Frames ” + ellapsedTime);

}

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Zeven Rodriguez

Python HW Feb 19 Reddit Headlines

Solar Presentation

Wildlife Tracking: RFID research

Reading and Writing Text Homework 1

Pan-Ball Flute

Wildlife/People Observation

Hospitable Room: Initial Pitch

Hospitable Room – Assignment 1